This is basiclly the answer. I like the third but especially. Personally, I would start with a profile gauge, since I don't think my PS5 has a very simple curve to it, scan it next to a metric ruler on a flatbed scanner, scale the ruler to be dimensionally accurate in fusion 360, iterate a few times and call it good enough.
I do kind of wonder about the design intent though. I don't know if newer PS5s are flat, butine isn't. I imagine the stand won't want to stay in one place very well. There are ways of solving this, but it will add extra complexity. Why not make a stand somewhere else?